The latest release is always available from GitHub. Download only versioned tarballs,
mini-snmpd-X.Y.tar.gz. See below for instructions on how to build.
The Mini SNMP daemon is a minimal implementation of an SNMP daemon. It
is primarily targeted at embedded systems with limited disk and memory
resources. All configuration can be done using command line arguments,
or using the optional /etc/mini-snmp.conf file. It supports basic
CPU, memory, disk, and network interface statistics.
mini-snmpd is not as flexibible as, and does not support the same
features as, the de-facto standard net-snmp, but this also means
it does not have the same footprint and overhead.
Supported features:
- SNMP version 1 and 2c
- Community string authentication when using 2c or explicitly configured
- Read-only access (writing is not supported)
- Includes basic system info like CPU load, memory, disk and network interfaces
- Does not need a configuration file, but one is supported
- Supports UDP and TCP (thus supports SSH tunneling of SNMP connections)
- Supports Linux kernel versions 2.4, 2.6, and later
- Supports FreeBSD (needs procfs mounted using "mount_linprocfs procfs /proc")
mini-snmpd has been tested on x86 and ARM platforms in Ubuntu Linux,
Alpine Linux, and FreeBSD, using net-snmp and SnmpB as clients. Big
endian may not work.
- For info about licensing, see the file COPYING
- For info about using the program, see the file mini-snmpd.8
- For info about how to (cross)compile the program, see the file Makefile
- For info about how to extend the MIB, see the file README.develop
Start the daemon:
./mini-snmpd -n -p 16161 -D "My laptop" -L "Batcave" \
-C "Ops <[email protected]>" -d '/' -i wlp3s0
Check uptime, useful to "ping" a device over SNMP:
snmpget -c public -v2c 127.0.0.1:16161 system.sysUpTime.0
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (93103) 0:15:31.03
Complete walk:
snmpwalk -v2c -c public 127.0.0.1:16161
SNMPv2-MIB::sysDescr.0 = STRING: My laptop
SNMPv2-MIB::sysObjectID.0 = OID: SNMPv2-SMI::enterprises
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (93103) 0:15:31.03
SNMPv2-MIB::sysContact.0 = STRING: Ops <[email protected]>
SNMPv2-MIB::sysName.0 = STRING: luthien
SNMPv2-MIB::sysLocation.0 = STRING: Batcave
IF-MIB::ifNumber.0 = INTEGER: 1
IF-MIB::ifIndex.1 = INTEGER: 1
IF-MIB::ifDescr.1 = STRING: wlp3s0
IF-MIB::ifType.1 = INTEGER: ethernetCsmacd(6)
IF-MIB::ifMtu.1 = INTEGER: 1500
IF-MIB::ifSpeed.1 = Gauge32: 1000000000
IF-MIB::ifPhysAddress.1 = STRING: 6c:88:14:48:57:1c
IF-MIB::ifAdminStatus.1 = INTEGER: up(1)
IF-MIB::ifOperStatus.1 = INTEGER: up(1)
IF-MIB::ifLastChange.1 = Timeticks: (0) 0:00:00.00
IF-MIB::ifInOctets.1 = Counter32: 207845364
IF-MIB::ifInUcastPkts.1 = Counter32: 154221
IF-MIB::ifInDiscards.1 = Counter32: 0
IF-MIB::ifInErrors.1 = Counter32: 0
IF-MIB::ifOutOctets.1 = Counter32: 13323787
IF-MIB::ifOutUcastPkts.1 = Counter32: 88071
IF-MIB::ifOutDiscards.1 = Counter32: 0
IF-MIB::ifOutErrors.1 = Counter32: 0
HOST-RESOURCES-MIB::hrSystemUptime.0 = Timeticks: (454155) 1:15:41.55
Check load average:
snmpwalk -v2c -c public 127.0.0.1:16161 UCD-SNMP-MIB::laLoad
UCD-SNMP-MIB::laLoad.1 = STRING: 0.56
UCD-SNMP-MIB::laLoad.2 = STRING: 0.46
UCD-SNMP-MIB::laLoad.3 = STRING: 0.36
Check monitored disks:
snmpwalk -v2c -c public 127.0.0.1:16161 UCD-SNMP-MIB::dskTable
UCD-SNMP-MIB::dskIndex.1 = INTEGER: 1
UCD-SNMP-MIB::dskPath.1 = STRING: /
UCD-SNMP-MIB::dskTotal.1 = INTEGER: 245084448
UCD-SNMP-MIB::dskAvail.1 = INTEGER: 38953552
UCD-SNMP-MIB::dskUsed.1 = INTEGER: 206130896
UCD-SNMP-MIB::dskPercent.1 = INTEGER: 85
UCD-SNMP-MIB::dskPercentNode.1 = INTEGER: 10
The GNU Configure & Build system use /usr/local as the
default install prefix. Usually this is sufficient, the below example
installs to /usr instead:
tar xf mini-snmpd-X.Y.tar.xz
cd mini-snmpd-X.Y/
./configure --prefix=/usr
make -j5
sudo make install-strip
To use the /etc/mini-snmpd.conf support, both the pkgconfig and
libConfuse packages must be installed. Installing from pre-built
packages differ between systems, check naming and suffix (-dev) to
match your system.
Note: mini-snmpd-X.Y.tar.gz is not an actual release. See the releases page on GitHub for the latest versioned release.
If you want to contribute, or simply want to try out the latest but still unreleased features, then you need to know a few things about the GNU Configure & Build system:
configure.acand a per-directoryMakefile.amare key filesconfigureandMakefile.inare generated fromautogen.sh, they are not stored in GIT but automatically generated for the release tarballsMakefileis generated byconfigurescript
To build from GIT you first need to clone the repository and run the
autogen.sh script. This requires automake and autoconf to be
installed on your system.
git clone https://github.com/troglobit/mini-snmpd.git
cd mini-snmpd/
./autogen.sh
./configure && make
GIT sources are a moving target and are not recommended for production systems, unless you know what you are doing!
mini-snmpd is an effort by Joachim Nilsson to create a focal point for patches and development of the original mini_snmpd project by Robert Ernst, since the original site now has gone dark.
The new project is maintained at GitHub. Use its issue tracker and pull request functions to report bugs or contribute new features.
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